[TechAssist] Re: microwave
- From: Gary McCartney <gary@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 29 Dec 2003 23:53:51 -0500
I use my TV high voltage probe on microwaves and have never had a
problem. This is an all in one probe with an analog meter on the probe,
not the type that is used in conjunction with a multimeter. I connect
the negative lead to the capacitor and the probe end to the metal oven
case and it measures a couple thousand volts if all is working.
Gary McCartney
McCartney Electronics
Guelph Ontario Canada
Est. 1984
email: gary (at) number63.ca
George wrote:
>
> Enough to cream your meter and is negative to ground so do not use the meter
> on the probe type! The door switches are what I found to be the common cause
> of the problem you described. Too often they will measure good but not
> properly lined up and will not work right, some can be made to work by
> closing the door firmly or harder than normal so double check all the door
> switches as they are in series.
>
> George
> Afana Electronics
> Moreno Valley, CA
>
> ----- Original Message -----
> From: "Ed" <edb3@xxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Friday, December 26, 2003 11:04 AM
> Subject: [TechAssist] Re: microwave
>
> > Cant seem to find a reason for this thing not to heat, unless the mag is
> > bad, i can measure continuity across the mag term, its not open, or
> > shorted.wiring seems to be ok, door switches are working, the hv cap
> checks
> > ok, so does the diode, hope someone has a idea. How much voltage should
> > there be at the magnatron filiment terminals? The hv xformer isnt shorted,
> > and the windings are not open
> > Ed Video Pro-Tech Mesa AZ
> > ----- Original Message -----
> > From: "Doug Keller" <dek@xxxxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Friday, December 26, 2003 8:32 AM
> > Subject: [TechAssist] Re: microwave
> >
> >
> > > May be a thermal sensor problem. Check them and also verify that the
> > > airflow can get through the fins of the magnetron and help it to cool.
> > >
> > > Doug Keller
> > > Wis-Kel Electronics
> > > 101 Freeland Ave.
> > > Terra Alta, WV
> > > USA 26764
> > > dek@xxxxxxxxxxxxxx
> > > http://www.tech-assist.org
> > > "Learn from the mistakes of others, because you
> > > won't live long enough to make them all yourself"
> > >
> > >
> > >
> > > Ed wrote:
> > >
> > > >Really havent checked anything yet, have never workedon one, just
> wanted
> > to
> > > >get some ideas. I will pull it down later today, heated up a cup of
> > coffee
> > > >and it worked fine, the next cup it wouldnt heat, everything else is
> > running
> > > >ok. Does the magnatron usually go that fast?
> > > > Ed Video Pro-Tech
> > > > Mesa AZ
> > > >----- Original Message -----
> > > >From: "Doug Keller" <dek@xxxxxxxxxxxxxx>
> > > >To: <techassist@xxxxxxxxxxxxx>
> > > >Sent: Friday, December 26, 2003 7:49 AM
> > > >Subject: [TechAssist] Re: microwave
> > > >
> > > >
> > > >
> > > >
> > > >>fuse?, power to trans?, HV? magnetron? What have you checked so far?
> > > >>
> > > >>Doug Keller
> > > >>Wis-Kel Electronics
> > > >>101 Freeland Ave.
> > > >>Terra Alta, WV
> > > >>USA 26764
> > > >>dek@xxxxxxxxxxxxxx
> > > >>http://www.tech-assist.org
> > > >>"Learn from the mistakes of others, because you
> > > >>won't live long enough to make them all yourself"
> > > >>
> > > >>
> > > >>
> > > >>Ed wrote:
> > > >>
> > > >>
> > > >>
> > > >>>anyone here experianced on microwave ovens? This is a GE over the
> stove
> > > >>>
> > > >>>
> > > >type, quit heating this morning. Maybe there are some common failures i
> > > >should look for, its a 1998 model GE, model JVM1450WA
> > > >
> > > >
> > > >>> Ed Video Pro-Tech
> > > >>> Mesa AZ
> > > >>>
> > > >>>
> > >
> >
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--
Gary McCartney
McCartney Electronics
Guelph Ontario Canada
Est. 1984
email: gary (at) number63.ca
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